Feed-roller.



J. B. LADD & D. BAKER.

FEED ROLLER.

APPLICATION FILED MAR. 22, 1011.

1,081,969. Patented Dec. 23, 1913.

2 SHEETS-SHEET 1.

III

I a r '"hiiiinm "H JAMES Binon Z DAVID BAKEIT BIA PLANOGRAPH co WASHINGTON D c J. B. LADD & D. BAKER.

FEED ROLLER. APPLIOATION FILED MAR. 22, 1911.

1,081,969, Patented Dec.23, 1913.

2 BHEETB-'SHEET 3. .9 0/ f 5 Z 4/ J3 COLUMBIA PuwdonAln C0,, wummrmu. 0.1:.

nmrno STATES PATENT OFFICE.

JAMES B. LADD AND DAVID BAKER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR-S,

BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-HALF TO LADD & BAKER, INCOR- PORATED, A CORPORATION OF PENNSYLVANIA, AND ONE-HALF '10 DAVID BAKER,

0F PHILADELPHIA, PENNSYLVANIA.

FEED-ROLLER.

Specification of Letters Patent.

Patented Dec. 23,1913.

Application filed March 22, 1911. Serial No. 616,107.

To all whom it may concern Be it known that we, Janus B. LADD and I)AV]D BAKER, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Feed-Rollers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to feed rollers and is designed particularly for use in handling coke, the objects of the invention being to provide a device of this character by which the coke may be screened and the fines and dust separated from the coarser lumps without liability of grinding or crushing the latter and with a minimum of waste.

WVith these ends in view, our invention consists primarily of a feed roller provided wth a series of circumferential continuous slots 01' grooves.

The invention consists also in combining with a roller having continuous circumferential grooves, a series of fingers extending into the grooves and acting, as the roller is rotated, to dislodge any material which may collect in the grooves or become wedged therein.

In the accompanying drawings: Figure 1 is a side elevation of our improved feed roller mounted in the discharge mouth of a storage bin. Fig. 2 is a longitudinal section through the roller on an enlarged scale. Fig. 3 is a transverse section through the same on the line aa of Fig. 2. Fig. 4; is a perspective view of one of the segmental sect-ions of which the roller is formed.

Referring to the drawings: 1 represents a bin for holding coke or other material, which bin is provided with a discharge mouth or chute 2, in which is mounted for rotation a feed roller 3, in such position that the coke will, as the roller is rotated in the direction of the arrow in Fig. 1, be drawn from the mouth in a stream and be discharged over the moving surface of the roller.

In accordance with our present invention, the roller 1 is formed with an open interior or hollow, and is provided in its cylindrical wall with a series of continuous slots or grooves 4, extending cireumferentially therearound and parallel with each other, which slots are separated by circumferential walls or ribs 4:. These slots extend through the wall of the roller to its interior so that when the roller is revolved, the coarser lmnps of coke will be supported and carried by the ribs, and the fine material and dust will pass down between the ribs through the slots to the interior of the roller and then will be screened out through the under side of the same.

The roller in its detailed form may be of any suitable construction to embody these characteristic features, but we prefer to adopt the construction shown more particularly in Figs. 2, 3 and 4, where it will be seen that it is composed of a number of segmental longitudinal sections 5, comprising each two longitudinal webs or blades 5, connected at their opposite ends fixedly to segmental plates or brackets 5 from which webs, transverse ribs extend outwardly at intervals parallel with each other forming slots between them. The segmental sections thus formed are arranged side by side in the form of a cylinder and are connected at their ends between two circular frames or spiders S, the plates 5 on the ends of the sections being seated against the inner faces of the spiders near their peripheral edges and firmly fixed thereto by bolts 8 extending through the plates and through the spiders. \Vhen thus arranged and connected to the end supporting spiders, the ends of the transverse ribs on adjacent sections will abut against each other and conjointly form continuous ribs extending circumferentially around the roller, and spaced by continuous grooves or slots which communicate with the hollow interior of the roller through the spaces between the longitudinal webs 5.

From the construction described, it will be seen that the webs 5 extending transversely of the circumferential slots constitute blades which act as the roller is rotated to positively advance the coke resting on the edges of the ribs or walls, and in this manner facilitate the discharge of the coke from the chute.

The end supporting frames or spiders are formed with central openings to receive a supporting shaft 9, which may be splined to the roller and suitably mounted for rotation by bearings 10, fixed to the frame of the bin.

In order that any lumps which may Wedge in the slots may be dislodged as the roller is rotated, and the slots kept free so as not to interfere with the proper screening action of the device, we provide a cleaning device in the form of a bar 12, provided at one edge with a series of cleaning fingers 12 This bar is fixed in an inclined position at the forward and lower side of the roller, with the cleaning fingers projecting upwardly and extending into the continuous slots in the roller as shown more particularly in Figs. 2 and 3, and in such relation to the slots, these fingers will act, as the roller is rotated relatively to them, to dislodge any material collecting in the slots, and by such means keep the slots free and clean.

By reason of the provision of the continuous slots in the roller, the rotation of the latter will not grind or wear on the coke and in this manner produce dust, the discharge of the coke from the chute being uniform and the fines or dust being effectually screened therefrom. Furthermore, it will be seen that by reason of the continuous character of the slots, the cleaning fingers are adapted to act in their fixed position automatically and with effectiveness in freeing the slots of any lodged material and keeping them clean.

While in the accompanying drawings we have illustrated our invention in the form which we prefer to adopt and which operates satisfactorily in practice, we wish it to be understood that the specific details may be changed and modified without departing from the spirit of our invention; and it is further to be understood that the invention is not to be limited to any particular form or construction of the parts except in so far as such limitations are set forth in the claims.

Having thus described our invention, what we claim is 1. A rotary feed roller for delivering coke and the like from bins or chutes, said roller through the wall of the roller and into its interior, the said slots being separated from each other by circumferentially continuous portions presenting conjointly a supporting surface on which the coarse material is supported and fed by the rotation of the roller.

2. In combination with a bin or chute, a rotary cylindrical feed roller having a hol low interior and provided with circumferentially continuous slots extending through the wall of the roller and into its interior, the said slots being separated from each other by circumferentially continuous solid rib portions presenting conjointly a cylindrical supporting surface, and the said roller being so mounted relatively to the bin that in the rotation of the roller, the material will be supported on the ribbed surface and fed in this condition from the bin.

3. In combination with a bin or chute, a rotary cylindrical feed roller having a hollow interior and provided with circumferentially continuous slots extending through the wall of the roller and into its interior, the said slots being separated by circumferentially continuous ribbed portions presenting conjointly a material supporting surface, the said roller being so mounted in relation to the bin or chute that in the rotation of the roller the material will be supported on the ribbed surface and fed in this condition from the bin, and a series of fixed fingers extending into the said slots and acting as the roller rotates to free the same from any material lodging therein.

In testimony whereof we have aflixed our signatures in presence of two witnesses.

JAMES B. LADD. DAVID BAKER. Witnesses:

HELEN I. KAUFFMAN, LOUISE B. Mounts.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

